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KOYO / Single-row / inch series

KOYO 21063/212

Tapered roller bearings technical reference with manufacturer-sourced dimensions, characteristics and engineering resources.

Technical data available
Bore diameterd
15.875 mm
Outside diameterD
53.975 mm
WidthB
21.839 mm
Dynamic load ratingC
52.6 kN
Static load ratingC0
41.2 kN
Limiting speednG
8400 r/min

Use this page as a technical reference. Verify the current manufacturer specification and the complete application requirements before selection.

Technical data

Product specifications

Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.

Core specifications9 parameters
Core specifications
ParameterSymbolValue
Variant / constructionSingle-row / Inch series
Bore diameterd15.875 mm
Outside diameterD53.975 mm
WidthB21.839 mm
Basic dynamic load ratingC52.6 kN
Basic static load ratingC041.2 kN
Fatigue load limitPu5.65 kN
Limiting speednG8400 r/min
Mass≈m0.26 kg
Manufacturer Identity2 parameters
Manufacturer Identity
ParameterSymbolValue
BrandKOYO
Official Class Key050-010-020
Classification2 parameters
Classification
ParameterSymbolValue
Official Category PathTapered roller bearings - Single-row - Inch series
Official Classification 1Tapered roller bearings / Single-row / Inch series
Technical Data23 parameters
Technical Data
ParameterSymbolValue
d15.875 mm
D53.975 mm
T22.225 mm
B21.839 mm
C15.875 mm
R(Min.)0.8 mm
R1(Min.)2.4 mm
Basic Load Ratings : Cr52.6 kN
Basic Load Ratings : C0R41.2 kN
Fatigue Load Limit : Cu5.65 kN
Limiting Speeds(Grease Lub.)8400 min-1
Limiting Speeds(Oil Lub.)11000 min-1
Load Center Spread : A16.6 mm
Constant :E0.59
Axial Load Factors : Y11.02
Axial Load Factors : Y00.56
Da29.0 mm
Db26.5 mm
Da43.0 mm
Db50.0 mm
Ra(Max.)0.8 mm
Rb(Max.)2.4 mm
Mass(Refer.)0.26 kg

Technical documents & data sheet

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Record identity
KOYO 21063/212
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